Re: depend on directory existance, not timestamp

[Paul D. Smith]

%% "Henry Gessau" <address@hidden> writes:

  hg> I want to create a rule that creates a directory if the directory
  hg> does not exist, and another rule where a file depends on the
  hg> existence of this directory, but not how old the directory is.

You can't.

I always recommend against this approach (directories as prerequisites).
It can never work well with make.

If you're using GNU make, just do something like this:

  __dummy := $(shell [ -d $(DIR) ] || $(MKDIR) $(DIR))

(where I typically set MKDIR to "mkdir -p" on systems that support it).

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